public class OutStatementTest1 {
    public static void main(String[] args) {
        //System.out.println()中支持哪些类型，可以通过快捷键 Ctrl + P查看
        System.out.println("hello world");
        System.out.println();
        System.out.println(1);
        System.out.println(1L);
        System.out.println(true);
        System.out.println(5.5F);
        System.out.println(5.5);
        System.out.println('a');

        byte b = 1;
        System.out.println(b);


    }
}
